Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
San Francisco Lempa's weather in May, with an average high-temperature of a still tropical 32.1°C (89.8°F), subtly shifts from April's 33.8°C (92.8°F). San Francisco Lempa experiences an average nighttime temperature of 22.2°C (72°F) in the month of May.Heat index
May's average heat index is appraised at an extremely hot 43°C (109.4°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In May, the average relative humidity in San Francisco Lempa is 75%.Rainfall
May is the month with the most rainfall. Rain falls for 25.4 days and accumulates 242mm (9.53") of precipitation.Daylight
In San Francisco Lempa, the average length of the day in May is 12h and 47min.On the first day of the month, sunrise is at 05:33 and sunset at 18:12. On the last day of May, sunrise is at 05:26 and sunset at 18:20 CST.
Sunshine
In San Francisco Lempa, the average sunshine in May is 10.7h.UV index
The months with the highest UV index are February through May, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 7 during May, leads to the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
How hot does it get in San Francisco Lempa in May?
What is the average humidity in May in San Francisco Lempa?
What is the wettest month in San Francisco Lempa?
How many days does it rain in May in San Francisco Lempa?
What is the average length of the day in May in San Francisco Lempa?
What time are sunrise and sunset in May in San Francisco Lempa?
How long on average sun shines in May in San Francisco Lempa?
What are the months with the highest UV index in San Francisco Lempa?
What is the UV index reading in May in San Francisco Lempa?
Average temperature in May
San Francisco Lempa, El Salvador
- Average high temperature in May: 32.1°C
The warmest month (with the highest average high temperature) is March (34.1°C).
The month with the lowest average high temperature is October (29.6°C).
- Average low temperature in May: 22.2°C
The month with the highest average low temperature is April (22.3°C).
The coldest month (with the lowest average low temperature) is December (18.6°C).
Average pressure in May
San Francisco Lempa, El Salvador
- Average pressure in May: 1011.4mbar
The month with the highest atmospheric pressure is January (1013.7mbar).
The months with the lowest atmospheric pressure are May and October (1011.4mbar).
Average wind speed in May
San Francisco Lempa, El Salvador
- Average wind speed in May: 4.4km/h
The windiest month (with the highest average wind speed) is January (7.5km/h).
The calmest month (with the lowest average wind speed) is June (4.2km/h).
Average humidity in May
San Francisco Lempa, El Salvador
- Average humidity in May: 75%
The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is March (59%).
Average rainfall in May
San Francisco Lempa, El Salvador
- Average rainfall in May: 242mm
The wettest month (with the highest rainfall) is May (242mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in May
San Francisco Lempa, El Salvador
- Average rainfall days in May: 25.4 days
The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is January (1.5 days).
Average daylight in May /
Average sunshine in May
San Francisco Lempa, El Salvador
- Average daylight in May: 12h and 5min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is April (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in May
San Francisco Lempa, El Salvador
- Average sunshine days in May: 4.1 days
The month with the most sunshine days is January (29 days).
The month with the least sunshine days is September (1.3 days).
Average UV index in May
San Francisco Lempa, El Salvador
- Average UV index in May: 7
The months with the highest UV index are February, March, April and May (UV index 7).
The months with the lowest UV index are January, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in May
San Francisco Lempa, El Salvador
- Average cloud cover in May: 37
The month with the most cloud cover is September (Cloud cover 44).
The months with the least cloud cover are January and December (Cloud cover 14).
Average visibility in May
San Francisco Lempa, El Salvador
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April and December (10km).
The month with the lowest visibility is September (7km).
San Francisco Lempa, El Salvador
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